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Wyświetlanie 1-15 z 54
Tytuł:
Model of investments in the agricultural real property market
Model inwestycyjny na rynku nieruchomości rolnych
Autorzy:
Kozlowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/44285.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu. Wydawnictwo Uczelniane
Opis:
The paper presents model of the so-called strategic investment card as a complex approach to implementation of investment in agricultural real properties. The model was financial-economic and strategic conditions in the market of agricultural real property. The evaluation of the investment was defined in the aspects of economic, market, and social-environmental effectiveness as well as the so-called investment options.
W opracowaniu przedstawiono model inwestycyjny w postaci tzw. strategicznej karty inwestycyjnej, jako kompleksowe podejście do realizacji inwestycji w nieruchomości rolne. Istota modelu sprowadza się do oceny uwarunkowań finansowo-ekonomicznych i strategicznych występujących na rynku nieruchomości rolnych. Ocenę inwestycji zdefiniowano w aspektach: efektywności ekonomicznej, rynkowej, społeczno-środowiskowej oraz tzw. opcji inwestycyjnych.
Źródło:
Journal of Agribusiness and Rural Development; 2009, 14, 4
1899-5241
Pojawia się w:
Journal of Agribusiness and Rural Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A model valuation of economic and social effects - a case study of the Olsztyn ring road construction
Model wyceny efektów ekonomiczno-społecznych na przykładzie projektu budowy obwodnicy Olsztyna
Autorzy:
Kozlowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/37549.pdf
Data publikacji:
2014
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
valuation model
economic effect
social effect
Olsztyn city
ring road
construction
dual price
transport
infrastructure
Opis:
This article raises the question of transport infrastructure as a principal component of the social and economic system in any region of the world. Development of transport infrastructure leads to the so-called accumulation of effects obtained through various channels, e.g. upgraded communication and transportation technologies, shorter transit time, lower transport costs, improved safety and better long-term economic output in a given community. This paper presents a model valuation of economic and social effects of an investment made into road transport infrastructure based on a case study of the ring road designed to be constructed around Olsztyn. Analysis of the effects was based on the CBA (cost and benefit analysis) methodology, which is for example employed to evaluate the EU co-financed projects. The method presented herein will ensure more precise valuation of effects generated by planned investment projects and will be a tool supporting the decision-making process.
W opracowaniu poruszono tematykę związaną z infrastrukturą transportową będącą jednym z podstawowych elementów układu społeczno-gospodarczo każdego regionu. Rozwój infrastruktury transportowej wywołuje tzw. akumulację efektów uzyskanych za pośrednictwem różnych kanałów, takich jak: poprawa technologii komunikacyjnych, zmniejszenie czasu i kosztów przejazdu, poprawa bezpieczeństwa, a w długim okresie poprawę wyników ekonomicznych. W artykule przedstawiono model wyceny efektów ekonomiczno- społecznych inwestycji w infrastrukturę transportu drogowego na przykładzie projektu budowy obwodnicy Olsztyna. Analizę efektów oparto na założeniach metodyki CBA (cost and benefit analysis) wykorzystywanej do ewaluacji projektów współfinansowanych z funduszy unijnych. Opracowana metodyka umożliwia bardziej dokładną wycenę uzyskanych efektów z planowanych inwestycji a jednocześnie stanowić może narzędzie usprawniające proces decyzyjny.
Źródło:
Acta Scientiarum Polonorum. Oeconomia; 2014, 13, 2
1644-0757
Pojawia się w:
Acta Scientiarum Polonorum. Oeconomia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The power method for the generalized eigenvalue problem
Autorzy:
Kozłowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/747465.pdf
Data publikacji:
1992
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Eigenvalues, eigenvectors
Opis:
.
In this paper the Power Method for the generalized eigenvalue problem for matrix pencil (A-B)x=0 is considered. At any step of this iterative process the system of linear algebraic equations By-Ax has to be approximately solved with respect to y. We try to answer the question: how accurately we have to solve this system on each step of iteration,in order to guarantee resolution of the eigenproblem with given precision.
Źródło:
Mathematica Applicanda; 1992, 21, 35
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Notes on modular function spaces. II
Autorzy:
Kozłowski, W. M.
Powiązania:
https://bibliotekanauki.pl/articles/746034.pdf
Data publikacji:
1988
Wydawca:
Polskie Towarzystwo Matematyczne
Opis:
The article contains no abstract
Źródło:
Commentationes Mathematicae; 1988, 28, 1
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the construction of common fixed points for semigroups of nonlinear mappings in uniformly convex and uniformly smooth Banach spaces
Autorzy:
Kozlowski, W.M.
Powiązania:
https://bibliotekanauki.pl/articles/746293.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
common fixed point
Fixed point
Lipschitzian mapping
pointwise Lipschitzian mapping
semigroup of mappings
asymptotic pointwise nonexpansive mapping
uniformly convex Banach space
uniformly smooth Banach space
Fréchet differentiable norm
weak compactness
fixed point iteration process
Krasnosel'skii-Mann process
Mann process
Ishikawa process
Opis:
Let \(C\) be a bounded, closed, convex subset of a uniformly convex and uniformly smooth Banach space \(X\). We investigate the weak convergence of the generalized Krasnosel'skii-Mann and Ishikawa iteration processes to common fixed points of semigroups of nonlinear mappings \(T_t\colon C \to C\). Each of \(T_t\) is assumed to be pointwise Lipschitzian, that is, there exists a family of functions \(\alpha_t\colon C \to [0, \infty)\) such that \(\|T_t(x) - T_t (y)\| \leq\alpha_t (x)\|x -y\|\) for \(x, y \in C\). The paper demonstrates how the weak compactness of \(C\) plays an essential role in proving the weak convergence of these processes to common fixed points.
Źródło:
Commentationes Mathematicae; 2012, 52, 2
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Strong convergence of implicit iteration processes for nonexpansive semigroups in Banach spaces
Autorzy:
Kozlowski, W.M.
Powiązania:
https://bibliotekanauki.pl/articles/746461.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
fixed point
nonexpansive mapping
nonexpansive semigroup
fixed point iteration process
implicit iterative process
strong convergence
uniformly convex Banach space
Opis:
Let \(C\) be a convex compact subset of a uniformly convex Banach space. Let \(\{T_t\}_{t \geq0}\) be a strongly-continuous nonexpansive semigroup on \(C\). Consider the iterative process defined by the sequence of equations $$x_{k+1} =c_k T_{t_{k+1}}(x_{k+1})+(1-c_k)x_k.$$ We prove that, under certain conditions on \(\{c_k\}\) and \(\{t_k\}\), the sequence \(\{x_k\}_{n=1}^\infty\) converges strongly to a common fixed point of the semigroup \(\{T_t\}_{t \geq0}\). There are known results on convergence of such iterative processes for nonexpansive semigroups in Hilbert spaces and Banach spaces with the Opial property, and also weak convergence results in Banach spaces that are simultaneously uniformly convex and uniformly smooth. In this paper, we do not assume the Opial property or uniform smoothness of the norm.
Źródło:
Commentationes Mathematicae; 2014, 54, 2
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Notes on modular function spaces. I
Autorzy:
Kozłowski, W. M.
Powiązania:
https://bibliotekanauki.pl/articles/746030.pdf
Data publikacji:
1988
Wydawca:
Polskie Towarzystwo Matematyczne
Opis:
The article contains no abstract
Źródło:
Commentationes Mathematicae; 1988, 28, 1
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On Nonlinear Differential Equations in Generalized Musielak-Orlicz Spaces
Autorzy:
Kozlowski, W.M.
Powiązania:
https://bibliotekanauki.pl/articles/744903.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
ordinary differential equation, nonlinear equation, Cauchy problem, initial value problem, fixed point, nonexpansive mapping, modular function space, Orlicz space, Musielak-Orlicz space, convex modular
Opis:
We consider ordinary differential equations \(u'(t)+(I-T)u(t)=0\), where an unknown function takes its values in a given modular function space being a generalization of Musielak-Orlicz spaces, and \(T\) is nonlinear mapping which is nonexpansive in the modular sense. We demonstrate that under certain natural assumptions the Cauchy problem related to this equation can be solved. We also show a process for the construction of such a solution. This result is then linked to the recent results of the fixed point theory in modular function spaces.
Źródło:
Commentationes Mathematicae; 2013, 53, 2
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Road project assessment within the framework of sustainable development
Autorzy:
Kozłowski, W.
Gołębiewski, D.
Powiązania:
https://bibliotekanauki.pl/articles/96475.pdf
Data publikacji:
2017
Wydawca:
Fundacja Ekonomistów Środowiska i Zasobów Naturalnych
Tematy:
inwestycja drogowa
ocena
road infrastructure investment
assessment
Opis:
Local development is a dynamic process which mainly relies on qualitative and quantitative changes, accordingly to the needs of the local communities. One of the decisive circumstances of local development is an efficient road infrastructure. The main problem, in terms of road projects, is their socio-economic evaluation. The article presents a model for assessing S16 national road construction project, on the basis of four groups of indicators. The indicators monitor the changes occurring in the districts, located along the road corridor S16, within the framework of sustainable development. Results of the research give opportunity to a more detailed analysis and evaluation of road projects, furthermore they make a strong foundation for the exploration of cause-and-effect relations between the investments in infrastructure and the quality of life in the region.
Źródło:
Ekonomia i Środowisko; 2017, 1; 181-196
0867-8898
Pojawia się w:
Ekonomia i Środowisko
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Elastostatic problem for an interface rigid inclusion in a periodic two-layer space
Autorzy:
Kaczyński, A.
Kozłowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/386500.pdf
Data publikacji:
2010
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
naprężenie
efektywne własności materiałowe
statyka
tension
elastostatic problem
elastostatics
Opis:
The article is devoted to the elastostatic three-dimensional problem of an interface sheet-like inclusion (anticrack) embedded into a periodic two-layered unbounded composite. An approximate analysis is carried out within the framework of the homogenized model with microlocal parameters. The formulation and the method of solving the general problem for an arbitrarily shaped inclusion is presented. As an example illustrating this method, the problem for a rigid circular inclu- sion under perpendicular tension is solved explicitly and discussed from the point of view of failure theory.
Źródło:
Acta Mechanica et Automatica; 2010, 4, 4; 42-50
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Regressive-transgressive cyclothem with facies record of the re-flooding window in the Late Silurian carbonate succession (Podolia, Ukraine)
Autorzy:
Łuczyński, P.
Kozłowski, W.
Skompski, S.
Powiązania:
https://bibliotekanauki.pl/articles/138684.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
re-flooding window
spectral gamma ray record
shallow water carbonates
late Silurian
Podolia
wody płytkie
węglan
sylur
Podole
Opis:
The term “re-flooding window” was recently proposed as a time-interval connected with the transgressive stage of present day peri-reefal development. In the analysis presented here, a fossil record of a re-flooding window has been recognized. Nine Late Silurian carbonate sections exposed on the banks of the Dnister River in Podolia (Ukraine) have been correlated base on bed-by-bed microfacies analysis and spectral gamma ray (SGR) measurements. Correlated were sections representing settings ranging from the inner part of a shallow-water carbonate platform to its slope, through an organic buildup. The reconstructed depositional scenario has been divided into six development stages, with the first three representing a regressive interval and the latter three a transgressive interval of the basin’s history. The re-flooding window has been identified at the beginning of a transgressive part of the succession. Surprisingly, it is characterized by an extremely fast growth of a shallow, tide-dominated platform and by deposition of calciturbiditic layers in a more basinal area. The interpreted succession is a small-scale model illustrating the reaction of carbonate depositional sub-environments to sea level changes and determining the facies position of the stromatoporoid buildups within the facies pattern on a Silurian shelf. The use of SGR analyses in shallow water, partly high-energy, carbonate facies, both for correlation purposes and for identifying depositional systems, is a relatively new method, and thus can serve as a reference for other studies of similar facies assortment.
Źródło:
Acta Geologica Polonica; 2015, 65, 3; 297-318
0001-5709
Pojawia się w:
Acta Geologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stromatoporoid beds and flat-pebble conglomerates interpreted as tsunami deposits in the Upper Silurian of Podolia, Ukraine
Autorzy:
Łuczyński, P.
Skompski, S.
Kozłowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/138749.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Palaeotsunami
Silurian
Podolia
Stromatoporoid beds
Flat-pebble conglomerates
sylur
Podole
warstwy stromatoporoidowe
prefabrykaty płaskie
Opis:
Tsunami deposits are currently a subject of intensive studies. Tsunamis must have occurred in the geological past in the same frequency as nowadays, yet their identified depositional record is surprisingly scarce. Here we describe a hitherto unrecognized example of probable palaeotsunamites. The Upper Silurian (Pridoli) carbonate succession of Podolia (southwestern Ukraine) contains variously developed event beds forming intercalations within peritidal deposits (shallow water limestones, nodular marls and dolomites). The event beds are represented by stromatoporoid and fine-grained bioclastic limestones, in some places accompanied by flat-pebble conglomerates. The interval with event beds can be traced along the Zbruch River in separate outcrops over a distance of more than 20 km along a transect oblique to the palaeoshoreline. The stromatoporoid beds have erosional bottom surfaces and are composed of overturned and often fragmented massive skeletons. The material has been transported landward from their offshore habitats and deposited in lagoonal settings. The flat-pebble conglomerates are composed of sub-angular micritic clasts that are lithologically identical to the sediments forming the underlying beds. Large-scale landward transport of the biogenic material has to be attributed to phenomena with very high energy levels, such as tropical hurricanes or tsunamis. This paper presents a tsunamigenic interpretation. Morphometric features of redeposited stromatoporoids point to a calm original growth environment at depths well below storm wave base. Tsunami waves are the most probable factor that could cause their redeposition from such a setting. The vastness of the area covered by parabiostromal stromatoporoid beds resembles the distribution of modern tsunami deposits in offshore settings. The stromatoporoid beds with unsorted stromatoporoids of various dimensions evenly distributed throughout the thickness of the beds and with clast-supported textures most probably represent deposition by traction. In some sections, the stromatoporoids are restricted to the lowermost parts of the beds, which pass upwards into bioclastic limestones. In this case, the finer material was deposited from suspension. The coexistence of stromatoporoid beds and flat-pebble conglomerates also allows presenting a tsunami interpretation of the latter. The propagating tsunami waves, led to erosion of partly lithified thin-layered mudstones, their fragmentation into flat clasts and redeposition as flat-pebble conglomerates.
Źródło:
Acta Geologica Polonica; 2014, 64, 3; 261-280
0001-5709
Pojawia się w:
Acta Geologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recent studies on the Silurian of the western part of Ukraine
Autorzy:
Łuczyński, P.
Skompski, S.
Kozłowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/138934.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Upper Silurian
Podolia
facies
stromatoporoid beds
sedimentary environments
górny sylur
Podole
facja
warstwy stromatoporoidowe
środowiska sedymentacyjne
Opis:
The paper summarises the effects of recent studies carried out by a team from the Department of Historical and Regional Geology of the Faculty of Geology, University of Warsaw on the upper Silurian of Podolia (western part of Ukraine). The sedimentary history of the Silurian succession of Podolia is characterised by its cyclic pattern, with shallowing-upward cyclothems. In the traditional interpretation, the occurrence of stromatoporoid beds within each cyclothem marks the deepest (or most open-marine) sedimentary environment within the cycle. According to the results of recent studies, their occurrence is connected rather with a relatively shallow-water environment and with high energy phenomena. A substantial reinterpretation of the main sedimentary processes governing the deposition and facies distribution on the shelf is presented. Particularly, there are recognised and described high-energy sedimentary events repeatedly punctuating the generally calm sedimentation that prevailed in the lagoonal settings, some of which are interpreted as tsunami induced. Further perspectives for studies on the Silurian successions of Podolia are also discussed. The main problem is the precise correlation of particular sections that are scattered over vast distances and developed in similar facies associations.
Źródło:
Acta Geologica Polonica; 2016, 66, 3; 281-297
0001-5709
Pojawia się w:
Acta Geologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Cooksonia-type flora from the Upper Silurian of the Holy Cross Mountains, Poland
Autorzy:
Bodzioch, A
Kozlowski, W.
Poplawska, A.
Powiązania:
https://bibliotekanauki.pl/articles/20471.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
land plant
stratigraphy
Upper Silurian
Cooksonia
Polska
flora
vascular plant
Holy Cross Mountains
paleogeography
paleoenvironment
Opis:
Silurian land plants from the Holy Cross Mts. are described for the first time. The fossil assemblage occurs in a nearshore, marine, terrigenous deposit of Ludlowian/Pridolian age. It contains Cooksonia sp., Cooksonia−related species, and some problematical forms. The flora, which needs further study, is of importance to our understanding of early vascular plants and Late Silurian palaeogeography.
Źródło:
Acta Palaeontologica Polonica; 2003, 48, 4
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 54

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